Character | Description |
! | Indicates a receipt of a reply. |
. | Indicates the request has timed out while waiting for a reply. |
? | Unknown error. |
@ | Unreachable for unknown reason. |
A | Administratively unreachable. Usually means that an access control list (ACL) is blocking traffic. |
B | Packet too big. |
H | Host unreachable. |
N | Network unreachable (beyond scope). |
P | Port unreachable. |
R | Parameter problem. |
T | Time exceeded. |
U | No route to host. |
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